Document Type : Translation
. (2010). . Mathematical Culture and Thought, 28(2), 85-93.
. "", Mathematical Culture and Thought, 28, 2, 2010, 85-93.
. (2010). '', Mathematical Culture and Thought, 28(2), pp. 85-93.
, "," Mathematical Culture and Thought, 28 2 (2010): 85-93,
. . An Expository Journal of the Iranian Mathematical Society. 2010;28(2):85-93 (In Persian).